173rd Ave over Boxelder Ck
FairPennington County, South Dakota · 0.2 S.E. Owanka · Structure no. 000000052732343
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 150 ft
- 3 main spans
- Daily traffic
- 14
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
173rd Ave over Boxelder Ck is a prestressed concrete tee beam carrying 173rd Ave over Boxelder Ck in Pennington County, South Dakota. It was built in 1981, so it is 44 years old, younger than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 14 vehicles a day, roughly 15% of them trucks, projected to reach 14 by 2034. The structure is 150 ft (45.7 m) long and 30 ft wide. If it were closed, the detour would be 26.1 mi (42 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 173rd Ave over Boxelder Ck built?
It was built in 1981, making it 44 years old in 2025.
What condition is 173rd Ave over Boxelder Ck in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does 173rd Ave over Boxelder Ck carry?
About 14 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is 173rd Ave over Boxelder Ck?
The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.
Who owns 173rd Ave over Boxelder Ck?
It is owned by the County Highway Agency.